I am looking for a relay transformer that rca says has been discontinued the old part # is 157837 & the newer rca part # is 157421 both # have been discontinued it goes in the relay circuit of chassis ctc121E. Thank You Jim Hull Hull TV & Appliance,inc. Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.